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Hans Jonas (May 10, 1903 - February 5, 1993) is a German-born philosopher.

He is best known for his influential work The Imperative of Responsibility (German 1979, English 1984). His work centers on social and ethical problems created by technology. Jonas insists that human survival depends on our efforts to care for our planet and its future. He formulated a new and distinctive supreme principle of morality, "Act so that the effects of your action are compatible with the permanence of genuine human life".

He also wrote extensively on Gnosticism, for which he is almost equally well known, interpreting the religion from an existentialist philosophical viewpoint. Jonas was the first author to write a detailed history of ancient Gnosticism. He was also one of the first philosophers to concern himself with ethical questions in biological science.^[1] Jonas' philosophy was influenced by the process philosophy and process theology of Alfred North Whitehead.

Contents 1 Biography 2 Works 3 References 4 Further reading 5 See also 6 External links

Jonas was born in Mönchengladbach May 10, 1903. He studied philosophy and theology in Freiburg, Berlin and Heidelberg, and finally achieved his Doctor of Philosophy at Marburg where he studied under Martin Heidegger and Rudolf Bultmann. In Marburg he met Hannah Arendt who was also pursuing her PhD there, and the two of them were to become friends for the rest of their lives.

In 1933, Heidegger joined the German Nazi party, which Jonas took personally as he was of Jewish descent and an active Zionist. The fact that the great philosopher was capable of such political folly made Jonas doubt the value of philosophy. He left Germany for England in the same year, and from England he moved to Palestine, 1934. There he met Lore Weiner, to whom he became betrothed. In 1940 he returned to Europe to join the British Army, who had been arranging a special brigade for German Jews wanting to fight against Hitler. He was sent to Italy, and in the last phase of the war moved into Germany. Thus, he kept his promise that he would return only as a soldier in the victorious army. In this time he wrote several letters to Lore about philosophy as well as love. They finally married in 1943.

Immediately after the war he returned to Mönchengladbach to search for his mother, but found that she had been sent to the gas chambers in Auschwitz concentration camp. Having heard this, he refused to live in Germany again. So he returned to Palestine and took part in Israel's war of independence in 1948. However, he felt that his destiny was not to live as a Zionist, but to teach philosophy. Jonas taught briefly at the Hebrew University of Jerusalem before moving to North America. In 1950 he left for Canada, teaching at Carleton University, and from there moved to New York City in 1955 where he was to live for the rest of his life. He worked for New School of Social Research 1955 to 1976 and died in New York City on February 5, 1993.

• Hans Jonas: Gnosis und spätantiker Geist (1-2, 1934-1954)
• Hans Jonas: The Phenomenon of Life: Toward a Philosophical Biology (1966)
• Hans Jonas: The Imperative of Responsibility: In Search of Ethics for the Technological Age (1979) ISBN 0-226-40597-4
• Hans Jonas: The Phenomenon of Life: Toward a Philosophical Biology (Studies in Phenomenology and Existential Philosophy) (1979) ISBN 0-8101-1749-5
• Hans Jonas: The Gnostic Religion: The Message of the Alien God & the Beginnings of Christianity (1979) ISBN 0-8070-5801-7
• Hans Jonas: Technik, Medizin und Ethik - Zur Praxis des Prinzips Verantwortung - Frankfurt a.M. : Suhrkamp, 1985 - ISBN 3-518-38014-1 ('On technology, medicine and ethics' - On the practice of the imperative of Responsibility.' Not translated into English yet.)

• Harms, Klaus: Hannah Arendt und Hans Jonas. Grundlagen einer philosophischen Theologie der Weltverantwortung. Berlin: WiKu-Verlag (2003). ISBN 3-936749-84-1. (de)
• Scodel, Harvey. "An interview with Professor Hans Jonas." Social Research Summer 2003.
• Trosler, Lawrence. "Hans Jonas and the Concept of God after the Holocaust," Conservative Judaism (Volume 55:4, Summer 2003)

• Natural environment
• Environmental movement
• Ethics of technology

• Hans-Jonas-Center Berlin
• Short biograhy